Script and patches to build and install variations of OSMesa http://www.mesa3d.org/osmesa.html:

• "mangled" or not (in mangled OSMesa, all functions start with mgl instead of gl)
• debug or not
• choice of osmesa driver: swrast, softpipe or llvmpipe
• possibility to also compile and install LLVM 3.4.2 for the llvmpipe driver

• edit variables / paths as the beginning of the osmesa-install.sh script
• compile and install:

mkdir build
cd build
sh ../osmesa-install.sh

• there is a test program on the osdemo directory, with a few checks

Note that the script fixes the following Mesa bugs related to mangles OSMesa:

• GL/gl_mangle.h misses symbols from GLES/gl.h